THE STRUCTURE AND PROPERTY CHARACTERISTICS OF AMORPHOUS NANOCRYSTALLINE SILICON PRODUCED BY BALL-MILLING

IMR OpenIR

	THE STRUCTURE AND PROPERTY CHARACTERISTICS OF AMORPHOUS NANOCRYSTALLINE SILICON PRODUCED BY BALL-MILLING
	T. D. Shen; C. C. Koch; T. L. McCormick; R. J. Nemanich; J. Y. Huang; J. G. Huang
	1995
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	10 期号:1 页码:139-148
摘要	The structural transformation of polycrystalline Si induced by high energy ball milling has been studied. The structure and property characteristics of the milled powder have been investigated by x-ray diffraction, scanning electron microscopy, high-resolution electron microscopy, differential scanning calorimetry, Raman scattering, and infrared absorption spectroscopy. Two phase amorphous and nanocrystalline components contain some defects such as dislocations, twins, and stacking faults which are typical of defects existing in conventional coarse-grained polycrystalline materials. The volume fraction of amorphous Si is about 15% while the average size of nanocrystalline grains is about 8 nm. Amorphous elemental Si without combined oxygen can be obtained by ball milling. The distribution of amorphous Si and the size of nanocrystalline Si crystallites is not homogeneous in the milled powder. The amorphous Si formed is concentrated near the surface of milled particles while the grain size of nanocrystalline Si ranges from 3 to 20 nm. Structurally, the amorphous silicon component prepared by ball milling is similar to that obtained by ion implantation or chemical vapor deposition. The amorphous Si formed exhibits a crystallization temperature of about 660-degrees-C at a heating rate of 40 K/min and crystallization activation energy of about 268 kJ/mol. Two possible amorphization mechanisms, i.e., pressure-induced amorphization and crystallite-refinement-induced amorphization, are proposed for the amorphization of Si induced by ball milling.
部门归属	n carolina state univ,dept phys,raleigh,nc 27695. acad sinica,atom imaging solids lab,shenyang 110015,peoples r china. acad sinica,inst met res,high tc superconduct lab,shenyang 110015,peoples r china.;shen, td (reprint author), n carolina state univ,dept mat sci & engn,raleigh,nc 27695, usa
关键词	Thermodynamic Properties Mechanical Attrition Grain-boundaries Raman-scattering Crystallization Si Transition Spectra Metals Transformation
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38661
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	T. D. Shen,C. C. Koch,T. L. McCormick,et al. THE STRUCTURE AND PROPERTY CHARACTERISTICS OF AMORPHOUS NANOCRYSTALLINE SILICON PRODUCED BY BALL-MILLING[J]. Journal of Materials Research,1995,10(1):139-148.
APA	T. D. Shen,C. C. Koch,T. L. McCormick,R. J. Nemanich,J. Y. Huang,&J. G. Huang.(1995).THE STRUCTURE AND PROPERTY CHARACTERISTICS OF AMORPHOUS NANOCRYSTALLINE SILICON PRODUCED BY BALL-MILLING.Journal of Materials Research,10(1),139-148.
MLA	T. D. Shen,et al."THE STRUCTURE AND PROPERTY CHARACTERISTICS OF AMORPHOUS NANOCRYSTALLINE SILICON PRODUCED BY BALL-MILLING".Journal of Materials Research 10.1(1995):139-148.